6.Eureka-服务发现Discovery

如何获取eureka的各项微服务信息？

可以在eureka的任何客户端代码中，控制层：
1.控制层新增方法
    @GetMapping("/getDiscovery")
    public Object getDiscovery(){
        //重点1：获取eureka的微服务名称
        List<String> services = discoveryClient.getServices();
        for (String service : services) {
            log.info("微服务名称："+service);
            //重点2：获取微服务下的各项实例信息
            List<ServiceInstance> instances = discoveryClient.getInstances(service);
            for (ServiceInstance instance : instances) {
                log.info("其下的实例:"+instance.getInstanceId()+" host:"+instance.getHost()
                +" port:"+instance.getPort()+" uri:"+instance.getUri()+" serviceID:"+instance.getServiceId()+
                " schema:"+instance.getScheme());
            }
        }
        return services;
    }
2.在springboot启动类上加上：@EnableDiscoveryClient注解
    @SpringBootApplication
    @EnableEurekaClient
    @EnableDiscoveryClient
    public class CustomerUserApplication {
        public static void main(String[] args) {
            SpringApplication.run(CustomerUserApplication.class, args);
        }
    }

3.测试：
    当访问时，控制台输出：
         微服务名称：producer-user-api
             其下的实例:userService8001 host:192.168.137.1 port:8001 uri:http://192.168.137.1:8001 serviceID:PRODUCER-USER-API schema:null
             其下的实例:userService8002 host:192.168.137.1 port:8002 uri:http://192.168.137.1:8002 serviceID:PRODUCER-USER-API schema:null
         微服务名称：customer-user
             其下的实例:userConsumer80 host:192.168.137.1 port:80 uri:http://192.168.137.1:80 serviceID:CUSTOMER-USER schema:null